That was my thought as well. I ordered 3 batteries and two sets of A and two sets of B props. No word yet on when I will get them and the charge is pending on my card.
Since I want to break the batteries in the correct way, fly for only half of the battery life for the first 10 flights, I am on hold taking this thing out. I don't want to go to a location and only be able to fly it for 10 min.. With 4 batteries I can fly at least 40 min and still be conditioning them all. I can deal with that the first 10 flights.
I read from various people that best practice is to not drain the battery too low so if they say you get 20-22 min on it, I am assuming that is to a very low level. I will probably get 15-18 as I intend to wrap up a flight at around 15 Volts. No idea how long a flight is from full to 15V. That is why I got 3 extra batteries at that price. I may even get 1 or 2 more in the future. ii
I've heard all the pro's and con's about battery conditioning on the other forum. I chose to do it with all of my Phantom batteries. Others say it's bunk and choose not to do it. Six of one, half-dozen of the other. Whatever make ya happy is all that matters.